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Hi Jeff. Thanks for your reply. I've worked out my problem. It was all down to memory or lack of it. We have the lithium and 1 engine starter + 1 aux which are lead acid. When we left the boat I disconnected the Lithium but so we still had power I connected the feed up to the engine battery...

Hi, I hope someone could shed a light on this problem. I installed a new system in 2020 which consists of 3 Battleborn BB10012 and tracer BN solar controller along with the AiLi monitor. It worked absolutely great until we left the boat over a 6 month period. I disconnected the batteries at 88%...